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The variation of soil temperature and water content of seasonal frozen soil with different vegetation coverage in the headwater region of the Yellow River, China
Cheng, Huiyan1,3; Wang, Genxu2; Hu, Hongchang3; Wang, Yibo3
Corresponding AuthorCheng, Huiyan
2008
Source PublicationENVIRONMENTAL GEOLOGY
ISSN0943-0105
Volume54Issue:8Pages:1755-1762
SubtypeArticle
AbstractThe variation and distribution of temperature and water moisture in the seasonal frozen soil is an important factor in the study of both the soil water cycle and heat balance within the source region of the Yellow River, especially under the different conditions of vegetation coverage. In this study, the impact of various degrees of vegetation coverage on soil water content and temperature was assessed. Soil moisture (theta(v)) and soil temperature (T(s)) were monitored on a daily basis. Measurements were made under different vegetation coverage (95, 70-80, 40-50 and 10%) and on both thawed and frozen soils. Contour charts of T(s) and theta(v) as well as a theta(v)-T(s) coupling model were developed in order to account for the influence of vegetation cover and the interaction between T(s) and theta(v). It was observed that soil water content affected both the overall range and trend in the soil temperature. The regression analysis of theta(v) versus T(s) plots indicated that the soil freezing and thawing processes were significantly affected by vegetation cover changes. Vegetation coverage changes also caused variations in the theta(v)-T(s) interaction. The effect of soil water content on soil temperature during the freezing period was larger than during the thawing period. Moreover, the soil with higher vegetation coverage retained more water than that with lower coverage. In the process of freezing, the higher vegetation coverage reduced the rate of the reduction in the soil temperature because the thermal capacity of water is higher than that of soil. Areas with higher vegetation coverage also functioned better for the purpose of heat-insulating. This phenomenon may thus play an important role in the environmental protection and effective uses of frozen soil.
KeywordSoil Temperature And Water Content Contour Chart The Headwater Region Of The Yellow River Theta(v)-t(s) Coupling Model
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s00254-007-0953-x
WOS Subject ExtendedEnvironmental Sciences & Ecology ; Geology ; Water Resources
Indexed BySCI
WOS KeywordPLATEAU ; CLIMATE
Language英语
Quartile4区
TOP
WOS SubjectEnvironmental Sciences ; Geosciences, Multidisciplinary ; Water Resources
WOS IDWOS:000256084700015
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/10528
Collection成都山地所知识仓储(2009年以前)
山地表生过程与生态调控重点实验室
Affiliation1.Lanzhou Univ Technol, Lanzhou 730050, Peoples R China
2.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Sichuan, Peoples R China
3.Lanzhou Univ, Minist Educ, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Huiyan,Wang, Genxu,Hu, Hongchang,et al. The variation of soil temperature and water content of seasonal frozen soil with different vegetation coverage in the headwater region of the Yellow River, China[J]. ENVIRONMENTAL GEOLOGY,2008,54(8):1755-1762.
APA Cheng, Huiyan,Wang, Genxu,Hu, Hongchang,&Wang, Yibo.(2008).The variation of soil temperature and water content of seasonal frozen soil with different vegetation coverage in the headwater region of the Yellow River, China.ENVIRONMENTAL GEOLOGY,54(8),1755-1762.
MLA Cheng, Huiyan,et al."The variation of soil temperature and water content of seasonal frozen soil with different vegetation coverage in the headwater region of the Yellow River, China".ENVIRONMENTAL GEOLOGY 54.8(2008):1755-1762.
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